PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-19:57:40
G02     332.4          79.5                7.2 +/-    0.42       7.3 +/-    0.42  0.120 / 0.250
G05     164.6          32.1               12.2 +/-    1.11      20.5 +/-    1.11  0.130 / 0.220
G06     40.7           42.0                7.4 +/-    0.89      10.4 +/-    0.89  0.060 / 0.180
G12     314.7          67.4                5.4 +/-    1.12       5.8 +/-    1.12  0.100 / 0.150
G17     83.5           14.0                8.3 +/-    1.73      21.2 +/-    1.73  0.030 / 0.050
G19     73.7           27.0                7.9 +/-    1.20      14.8 +/-    1.20  0.030 / 0.050
G24     229.8          23.8               19.0 +/-    2.60      38.3 +/-    2.60  0.080 / 0.170
G25     317.2          26.6                5.1 +/-    2.15       9.5 +/-    2.15  0.090 / 0.150